Vacuum exhaust system of sterilizer

Abstract

The present invention relates to a vacuum exhaust system of a sterilizer, comprising: a sterilization chamber; a first vacuum pump connected to one side of the sterilization chamber; an oil mist trap section for exhausting steam incoming from the sterilization chamber via the first vacuum pump; and a second vacuum pump connected to the first vacuum pump and the oil mist trap section. The vacuum exhaust system of a sterilizer according to the present invention comprises the second vacuum pump connected to the first vacuum pump and the oil mist trap section, wherein by turning the second vacuum pump on to apply a vacuum to the operating oil in the first vacuum pump, thereby providing a certain pressure for evaporating water in liquid state to the first vacuum pump, the present invention can vaporize the water vapor trapped in the operating oil in the first vacuum pump.

What is claimed is: 
     
       1. A vacuum exhaust system of a sterilizer, comprising:
 a sterilization chamber; 
 a first vacuum pump connected to one side of the sterilization chamber, wherein the first vacuum pump is an oil vacuum pump; 
 an oil mist trap section for releasing vapor introduced from the sterilization chamber via the first vacuum pump; 
 a second vacuum pump connected to the first vacuum pump and the oil mist trap section,
 wherein the second vacuum pump is a dry vacuum pump not using an oil, 
 wherein the second vacuum pump exposes an operating oil of the first vacuum pump to a vacuum level with a predetermined pressure, and the predetermined pressure is a pressure at which moisture trapped in the operating oil of the first vacuum pump can reach a point below its boiling point, and 
 wherein the second vacuum pump is configured to expose the operating oil of the first vacuum pump to the vacuum level with the predetermined pressure of 50 to 150 mb; and 
 
 a sterilant solution feed connected to the other side of the sterilization chamber. 
 
     
     
       2. The vacuum exhaust system of  claim 1 , wherein the second vacuum pump is connected in series with the first vacuum pump and the oil mist trap section. 
     
     
       3. The vacuum exhaust system of  claim 2 , further comprising:
 a first path opening/closing valve section provided between the second vacuum pump and the first vacuum pump. 
 
     
     
       4. The vacuum exhaust system of  claim 3 , further comprising:
 a second path opening/closing valve section provided between the first vacuum pump and the oil mist trap section. 
 
     
     
       5. The vacuum exhaust system of  claim 1 , further comprising:
 a first path opening/closing valve section provided between the first vacuum pump and the oil mist trap section, 
 wherein the second vacuum pump and the first path opening/closing valve section are connected in parallel between the first vacuum pump and the oil mist trap section. 
 
     
     
       6. The vacuum exhaust system of  claim 5 , wherein the first path opening/closing valve section is a check valve.